Bilirubin excretion is true in which of the following statements?

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Bilirubin is a bile pigment that the body eliminates via the biliary system. After being made in the liver, bilirubin is conjugated to glucuronic acid to become water-soluble, then secreted into bile and carried to the intestine. From there it travels to the gut and is excreted in feces. The gallbladder stores bile, not bilirubin itself, and bilirubin is not a digestive enzyme. A small amount can appear in urine only if conjugated bilirubin reaches the bloodstream (usually in disease), but the normal excretion route is into bile. Therefore, the statement that bilirubin is excreted into bile is correct.